CRM ABAP + Active Directory integration

Hello

My customer wants to integrate a 3rd party system with SAP CRM 7.0 EHP3 ABAP. 3rd party system is using Windows domain authentication and they want to access it via CRM without entering additional credentials. To do that I think AD integration with CRM ABAP will be enough but I couldn't find information about it. I also heard about Netweaver SSO 2.0 product but didn't have chance to try it.

Does anyone have a configuration guide for implementing AD authentication to CRM ABAP?

Best regards

Kaan